Hair drug testing: Many street drugs (or their breakdown products in the body) are absorbed into the hair. A sample of hair can be tested for recent drug use. Hair analysis: Testing of hair for toxic exposures, such as lead or mercury poisoning.
Gas Water Heater, water not hot enough-Thermostat or Sediment. The dip tube probably disintigrated. The dip tub sends cold water to the bottom of the tank for heating when its heated it rises to the top of the tank. Its possible that the dip tube broke of and now you have cold water mixing with the hot water on top.
This guide is not meant to be a comprehensive trouble shooting document, just a general guide to common water heating problems. Before trouble shooting your gas water heater check for the odor of gas. If you smell gas call your gas supplier immediately and have them check for leaks. Problem: No hot water. Remove the inner and outer burner access covers and Check to see if the pilot light is lit. If pilot light is not lit. Attempt to re-light pilot light following the instructions posted on your water heater.